Results 121 to 130 of about 75,738 (243)

Gamma ray astronomy from satellites and balloons [PDF]

A survey is given of gamma ray astronomy topics presented at the Cosmic Ray Conference. The major conclusions at the Cosmic Ray Conference in the field of gamma ray astronomy are given. (1) MeV-emission of gamma-ray bursts is a common feature. Variations
Schoenfelder, V.
core   +1 more source

Recent Topics on Very High Energy Gamma-Ray Astronomy [PDF]

, 2009
M. Mori
openalex   +1 more source

Evaluate the Prediction Level of Polar Motion Interpolation for 6 hr in Ideal and Real Environments

Earth and Space Science, Volume 13, Issue 1, January 2026.
Abstract With the increasing demands for global development, deep space exploration missions are taking place more frequently, rendering the traditional 24‐hr Polar Motion (PM) predictions inadequate for supporting the frequent operations of spacecraft.
Wei Miao, Xueqing Xu, Yonghong Zhou
wiley   +1 more source

Role of Large‐Scale Traveling Ionospheric Disturbances in the Positive Storm Phase Observed by the Millstone Hill Radar and GNSS TEC Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract A moderate geomagnetic storm was driven by high‐speed solar wind stream on 14 March 2016. We show that large‐scale traveling ionospheric disturbances (LSTIDs) played a significant role in producing the ionospheric storm positive phase at mid‐latitudes in the North American sector.
G. P. Geethakumari, A. T. Aikio, L. Cai, H. Vanhamäki, I. I. Virtanen, A. Coster, A. Maute, A. Marchaudon, P.‐L. Blelly   +8 more
wiley   +1 more source

Preliminary results of the pixel characterization for the Crystal Eye, a new X and gamma-ray satellite detector for multi-messenger astronomy [PDF]

, 2020
Felicia Barbato, G. C. Barbarino, A. Boiano, A. Vanzanella, F. Garufi, F. Guarino, Fabrizio Renno, Stefano Papa, Riccardo Guida, F. Di Capua   +9 more
openalex   +1 more source

An Extended Amplitude Range Readout Circuit for Charged Particle Detection–BEAR 2

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Charge sensitive amplifiers (CSA) form the first stage of most detector readout circuits. The operating range of the readout circuits depends on the saturation limits of the Charge sensitive amplifiers, thereby limiting the range of the detector system as well. A number of methods have been introduced to extend the dynamic range of the readout
A. Antony Gomez, R. W. Knepper, B. M Walsh, S. G. Kanekal, F. Gautier, G. Suarez   +5 more
wiley   +1 more source

A Study on the Line of Sight to Galaxies Detected at Gamma-Ray Energies

The Astrophysical Journal Letters
The large-scale universal structure comprises strands of dark matter and galaxies with large underdense volumes known as voids. We measure the fraction of the line of sight that intersects voids for active galactic nuclei (AGN) detected by Fermi Large ...
Amy Furniss, Josepf N. Amador, Olivier Hervet, Ollie Jackson, David A. Williams   +4 more
doaj   +1 more source

Stratigraphy of Carbonate‐Bearing Rocks at the Margin of Jezero Crater, Mars: Evidence for Shoreline Processes?

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Martian carbonate‐bearing rocks are compelling targets for exploration because they preserve detailed records of past aqueous processes, climate, and habitability. The Margin unit in Jezero crater is a distinct olivine‐ and carbonate‐bearing unit stratigraphically underlying the western fan, lining the inner margin of the western crater rim ...
Alexander J. Jones, Sanjeev Gupta, Robert Barnes, Briony H. N. Horgan, Kenneth H. Williford, Gerhard Paar, Kathryn. M. Stack, Bradley J. Garzcynski, Eleni Ravanis, Candice C. Bedford, Justin I. Simon, Athanasios Klidaras, Linda C. Kah, James F. Bell, Justin Maki, Stephen W. Lokier, Adrian Brown, Nathan R. Williams, Sanna Alwmark, Jorge I. Núñez, Fred Calef, Larry Crumpler, Alicia Vaughan, Libby R. W. Ives, Sam Gwizd, Ken Farley, Christian Tate, Nicolas Randazzo, Olivier Beyssac, Gwénaël Caravaca   +29 more
wiley   +1 more source

All-Sky-ASTROGAM: The MeV Gamma-Ray Companion to Multimessenger Astronomy [PDF]

, 2019
V. Tatischeff, A. De Angelis, M. Tavani, U. Oberlack, R. Walter, G. Ambrosi, A. Argan, P. von Ballmoos, S. Brandt, A. Bulgarelli, A. Bykov, S. Ciprini, D. Dominis Prester, V. Fioretti, I. A. Grenier, L. Hanlon, D. H. Hartmann, M. Hernanz, J. Isern, G. Kanbach, I. Kuvvetli, Philippe Laurent, M. N. Mazziotta, J. McEnery, S. Mereghetti, A. Meuris, A. Morselli, Kazuhiro Nakazawa, M. Pearce, R. Rando, J. Rico, R. M. Curado da Silva, A. Ulyanov, X. Wu, A. A. Zdziarski, Andreas Zoglauer   +35 more
openalex   +1 more source

An Analysis of the Exposure History of Apollo 17 Soils: Exploring Relationships Between Lunar Soil Maturity Indices

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Analysis of space weathering features in lunar regolith using transmission electron microscopy (TEM) allows researchers to characterize the surface exposure timescale of individual grains from the Moon. TEM analysis of regolith grains from Apollo 17 scoop samples, collected from five different locations in the Taurus‐Littrow Valley (TLV), each
J. A. McFadden, M. S. Thompson
wiley   +1 more source